When did Winston Churchill say If Hitler invaded Hell I would make at least a favorable reference to the devil in the House of Commons?

When Germany invaded the Soviet Union in June 1941, some MPs (Members of Parliament) teased Churchill, who had previously been very hostile to the Soviet Union and had played a key role in Western intervention against the Bolshevists in 1919-21. He replied with the above comment.

When Hitler invaded the Soviet Union, Winston Churchill, a vehement anti-Communist, famously stated "If Hitler invaded Hell, I would at least make a favourable reference to the Devil in the House of Commons," regarding his policy toward Stalin. Soon, British supplies and tanks were flowing to help the Soviet Union.